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cmd/link/internal/s390x: add s390x support

Browse Source 
Supports basic internal linking, external linking and shared library
linking.

Change-Id: Ic9693dd94df561b0f9df9880009b1e8ab9d59b92
Reviewed-on: https://go-review.googlesource.com/20879
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
This commit is contained in:
Michael Munday 2016-03-19 00:23:17 -04:00 committed by Michael Hudson-Doyle
parent 7c15b2ab4b
commit 29a6149e67
4 changed files with 797 additions and 0 deletions
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1
src/cmd/dist/buildtool.go vendored
View File

@ -53,6 +53,7 @@ var bootstrapDirs = []string{
"link/internal/ld",
"link/internal/mips64",
"link/internal/ppc64",
"link/internal/s390x",
"link/internal/x86",
}

598
src/cmd/link/internal/s390x/asm.go Normal file
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@ -0,0 +1,598 @@
// Inferno utils/5l/asm.c
// http://code.google.com/p/inferno-os/source/browse/utils/5l/asm.c
//
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
// Portions Copyright © 1997-1999 Vita Nuova Limited
// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
// Portions Copyright © 2004,2006 Bruce Ellis
// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
// Portions Copyright © 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package s390x
import (
"cmd/internal/obj"
"cmd/link/internal/ld"
"debug/elf"
"fmt"
)
// gentext generates assembly to append the local moduledata to the global
// moduledata linked list at initialization time. This is only done if the runtime
// is in a different module.
//
// <go.link.addmoduledata>:
// larl %r2, <local.moduledata>
// jg <runtime.addmoduledata@plt>
// undef
//
// The job of appending the moduledata is delegated to runtime.addmoduledata.
func gentext() {
if !ld.DynlinkingGo() {
return
}
addmoduledata := ld.Linklookup(ld.Ctxt, "runtime.addmoduledata", 0)
if addmoduledata.Type == obj.STEXT {
// we're linking a module containing the runtime -> no need for
// an init function
return
}
addmoduledata.Attr |= ld.AttrReachable
initfunc := ld.Linklookup(ld.Ctxt, "go.link.addmoduledata", 0)
initfunc.Type = obj.STEXT
initfunc.Attr |= ld.AttrLocal
initfunc.Attr |= ld.AttrReachable
// larl %r2, <local.moduledata>
ld.Adduint8(ld.Ctxt, initfunc, 0xc0)
ld.Adduint8(ld.Ctxt, initfunc, 0x20)
lmd := ld.Addrel(initfunc)
lmd.Off = int32(initfunc.Size)
lmd.Siz = 4
lmd.Sym = ld.Ctxt.Moduledata
lmd.Type = obj.R_PCREL
lmd.Variant = ld.RV_390_DBL
lmd.Add = 2 + int64(lmd.Siz)
ld.Adduint32(ld.Ctxt, initfunc, 0)
// jg <runtime.addmoduledata[@plt]>
ld.Adduint8(ld.Ctxt, initfunc, 0xc0)
ld.Adduint8(ld.Ctxt, initfunc, 0xf4)
rel := ld.Addrel(initfunc)
rel.Off = int32(initfunc.Size)
rel.Siz = 4
rel.Sym = ld.Linklookup(ld.Ctxt, "runtime.addmoduledata", 0)
rel.Type = obj.R_CALL
rel.Variant = ld.RV_390_DBL
rel.Add = 2 + int64(rel.Siz)
ld.Adduint32(ld.Ctxt, initfunc, 0)
// undef (for debugging)
ld.Adduint32(ld.Ctxt, initfunc, 0)
if ld.Ctxt.Etextp != nil {
ld.Ctxt.Etextp.Next = initfunc
} else {
ld.Ctxt.Textp = initfunc
}
ld.Ctxt.Etextp = initfunc
initarray_entry := ld.Linklookup(ld.Ctxt, "go.link.addmoduledatainit", 0)
initarray_entry.Attr |= ld.AttrLocal
initarray_entry.Attr |= ld.AttrReachable
initarray_entry.Type = obj.SINITARR
ld.Addaddr(ld.Ctxt, initarray_entry, initfunc)
}
func adddynrel(s *ld.LSym, r *ld.Reloc) {
targ := r.Sym
ld.Ctxt.Cursym = s
switch r.Type {
default:
if r.Type >= 256 {
ld.Diag("unexpected relocation type %d", r.Type)
return
}
// Handle relocations found in ELF object files.
case 256 + ld.R_390_12,
256 + ld.R_390_GOT12:
ld.Diag("s390x 12-bit relocations have not been implemented (relocation type %d)", r.Type-256)
return
case 256 + ld.R_390_8,
256 + ld.R_390_16,
256 + ld.R_390_32,
256 + ld.R_390_64:
if targ.Type == obj.SDYNIMPORT {
ld.Diag("unexpected R_390_nn relocation for dynamic symbol %s", targ.Name)
}
r.Type = obj.R_ADDR
return
case 256 + ld.R_390_PC16,
256 + ld.R_390_PC32,
256 + ld.R_390_PC64:
if targ.Type == obj.SDYNIMPORT {
ld.Diag("unexpected R_390_PCnn relocation for dynamic symbol %s", targ.Name)
}
if targ.Type == 0 || targ.Type == obj.SXREF {
ld.Diag("unknown symbol %s in pcrel", targ.Name)
}
r.Type = obj.R_PCREL
r.Add += int64(r.Siz)
return
case 256 + ld.R_390_GOT16,
256 + ld.R_390_GOT32,
256 + ld.R_390_GOT64:
ld.Diag("unimplemented S390x relocation: %v", r.Type-256)
return
case 256 + ld.R_390_PLT16DBL,
256 + ld.R_390_PLT32DBL:
r.Type = obj.R_PCREL
r.Variant = ld.RV_390_DBL
r.Add += int64(r.Siz)
if targ.Type == obj.SDYNIMPORT {
addpltsym(ld.Ctxt, targ)
r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
r.Add += int64(targ.Plt)
}
return
case 256 + ld.R_390_PLT32,
256 + ld.R_390_PLT64:
r.Type = obj.R_PCREL
r.Add += int64(r.Siz)
if targ.Type == obj.SDYNIMPORT {
addpltsym(ld.Ctxt, targ)
r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
r.Add += int64(targ.Plt)
}
return
case 256 + ld.R_390_COPY:
ld.Diag("unimplemented S390x relocation: %v", r.Type-256)
case 256 + ld.R_390_GLOB_DAT:
ld.Diag("unimplemented S390x relocation: %v", r.Type-256)
case 256 + ld.R_390_JMP_SLOT:
ld.Diag("unimplemented S390x relocation: %v", r.Type-256)
case 256 + ld.R_390_RELATIVE:
ld.Diag("unimplemented S390x relocation: %v", r.Type-256)
case 256 + ld.R_390_GOTOFF:
if targ.Type == obj.SDYNIMPORT {
ld.Diag("unexpected R_390_GOTOFF relocation for dynamic symbol %s", targ.Name)
}
r.Type = obj.R_GOTOFF
return
case 256 + ld.R_390_GOTPC:
r.Type = obj.R_PCREL
r.Sym = ld.Linklookup(ld.Ctxt, ".got", 0)
r.Add += int64(r.Siz)
return
case 256 + ld.R_390_PC16DBL,
256 + ld.R_390_PC32DBL:
r.Type = obj.R_PCREL
r.Variant = ld.RV_390_DBL
r.Add += int64(r.Siz)
if targ.Type == obj.SDYNIMPORT {
ld.Diag("unexpected R_390_PCnnDBL relocation for dynamic symbol %s", targ.Name)
}
return
case 256 + ld.R_390_GOTPCDBL:
r.Type = obj.R_PCREL
r.Variant = ld.RV_390_DBL
r.Sym = ld.Linklookup(ld.Ctxt, ".got", 0)
r.Add += int64(r.Siz)
return
case 256 + ld.R_390_GOTENT:
addgotsym(targ)
r.Type = obj.R_PCREL
r.Variant = ld.RV_390_DBL
r.Sym = ld.Linklookup(ld.Ctxt, ".got", 0)
r.Add += int64(targ.Got)
r.Add += int64(r.Siz)
return
}
// Handle references to ELF symbols from our own object files.
if targ.Type != obj.SDYNIMPORT {
return
}
ld.Diag("unsupported relocation for dynamic symbol %s (type=%d stype=%d)", targ.Name, r.Type, targ.Type)
}
func elfreloc1(r *ld.Reloc, sectoff int64) int {
ld.Thearch.Vput(uint64(sectoff))
elfsym := r.Xsym.ElfsymForReloc()
switch r.Type {
default:
return -1
case obj.R_TLS_LE:
switch r.Siz {
default:
return -1
case 4:
// WARNING - silently ignored by linker in ELF64
ld.Thearch.Vput(ld.R_390_TLS_LE32 | uint64(elfsym)<<32)
case 8:
// WARNING - silently ignored by linker in ELF32
ld.Thearch.Vput(ld.R_390_TLS_LE64 | uint64(elfsym)<<32)
}
case obj.R_TLS_IE:
switch r.Siz {
default:
return -1
case 4:
ld.Thearch.Vput(ld.R_390_TLS_IEENT | uint64(elfsym)<<32)
}
case obj.R_ADDR:
switch r.Siz {
default:
return -1
case 4:
ld.Thearch.Vput(ld.R_390_32 | uint64(elfsym)<<32)
case 8:
ld.Thearch.Vput(ld.R_390_64 | uint64(elfsym)<<32)
}
case obj.R_GOTPCREL:
if r.Siz == 4 {
ld.Thearch.Vput(ld.R_390_GOTENT | uint64(elfsym)<<32)
} else {
return -1
}
case obj.R_PCREL, obj.R_PCRELDBL, obj.R_CALL:
elfrel := ld.R_390_NONE
isdbl := r.Variant&ld.RV_TYPE_MASK == ld.RV_390_DBL
// TODO(mundaym): all DBL style relocations should be
// signalled using the variant - see issue 14218.
switch r.Type {
case obj.R_PCRELDBL, obj.R_CALL:
isdbl = true
}
if r.Xsym.Type == obj.SDYNIMPORT && (r.Xsym.ElfType == elf.STT_FUNC || r.Type == obj.R_CALL) {
if isdbl {
switch r.Siz {
case 2:
elfrel = ld.R_390_PLT16DBL
case 4:
elfrel = ld.R_390_PLT32DBL
}
} else {
switch r.Siz {
case 4:
elfrel = ld.R_390_PLT32
case 8:
elfrel = ld.R_390_PLT64
}
}
} else {
if isdbl {
switch r.Siz {
case 2:
elfrel = ld.R_390_PC16DBL
case 4:
elfrel = ld.R_390_PC32DBL
}
} else {
switch r.Siz {
case 2:
elfrel = ld.R_390_PC16
case 4:
elfrel = ld.R_390_PC32
case 8:
elfrel = ld.R_390_PC64
}
}
}
if elfrel == ld.R_390_NONE {
return -1 // unsupported size/dbl combination
}
ld.Thearch.Vput(uint64(elfrel) | uint64(elfsym)<<32)
}
ld.Thearch.Vput(uint64(r.Xadd))
return 0
}
func elfsetupplt() {
plt := ld.Linklookup(ld.Ctxt, ".plt", 0)
got := ld.Linklookup(ld.Ctxt, ".got", 0)
if plt.Size == 0 {
// stg %r1,56(%r15)
ld.Adduint8(ld.Ctxt, plt, 0xe3)
ld.Adduint8(ld.Ctxt, plt, 0x10)
ld.Adduint8(ld.Ctxt, plt, 0xf0)
ld.Adduint8(ld.Ctxt, plt, 0x38)
ld.Adduint8(ld.Ctxt, plt, 0x00)
ld.Adduint8(ld.Ctxt, plt, 0x24)
// larl %r1,_GLOBAL_OFFSET_TABLE_
ld.Adduint8(ld.Ctxt, plt, 0xc0)
ld.Adduint8(ld.Ctxt, plt, 0x10)
ld.Addpcrelplus(ld.Ctxt, plt, got, 6)
// mvc 48(8,%r15),8(%r1)
ld.Adduint8(ld.Ctxt, plt, 0xd2)
ld.Adduint8(ld.Ctxt, plt, 0x07)
ld.Adduint8(ld.Ctxt, plt, 0xf0)
ld.Adduint8(ld.Ctxt, plt, 0x30)
ld.Adduint8(ld.Ctxt, plt, 0x10)
ld.Adduint8(ld.Ctxt, plt, 0x08)
// lg %r1,16(%r1)
ld.Adduint8(ld.Ctxt, plt, 0xe3)
ld.Adduint8(ld.Ctxt, plt, 0x10)
ld.Adduint8(ld.Ctxt, plt, 0x10)
ld.Adduint8(ld.Ctxt, plt, 0x10)
ld.Adduint8(ld.Ctxt, plt, 0x00)
ld.Adduint8(ld.Ctxt, plt, 0x04)
// br %r1
ld.Adduint8(ld.Ctxt, plt, 0x07)
ld.Adduint8(ld.Ctxt, plt, 0xf1)
// nopr %r0
ld.Adduint8(ld.Ctxt, plt, 0x07)
ld.Adduint8(ld.Ctxt, plt, 0x00)
// nopr %r0
ld.Adduint8(ld.Ctxt, plt, 0x07)
ld.Adduint8(ld.Ctxt, plt, 0x00)
// nopr %r0
ld.Adduint8(ld.Ctxt, plt, 0x07)
ld.Adduint8(ld.Ctxt, plt, 0x00)
// assume got->size == 0 too
ld.Addaddrplus(ld.Ctxt, got, ld.Linklookup(ld.Ctxt, ".dynamic", 0), 0)
ld.Adduint64(ld.Ctxt, got, 0)
ld.Adduint64(ld.Ctxt, got, 0)
}
}
func machoreloc1(r *ld.Reloc, sectoff int64) int {
return -1
}
func archreloc(r *ld.Reloc, s *ld.LSym, val *int64) int {
if ld.Linkmode == ld.LinkExternal {
return -1
}
switch r.Type {
case obj.R_CONST:
*val = r.Add
return 0
case obj.R_GOTOFF:
*val = ld.Symaddr(r.Sym) + r.Add - ld.Symaddr(ld.Linklookup(ld.Ctxt, ".got", 0))
return 0
}
return -1
}
func archrelocvariant(r *ld.Reloc, s *ld.LSym, t int64) int64 {
switch r.Variant & ld.RV_TYPE_MASK {
default:
ld.Diag("unexpected relocation variant %d", r.Variant)
return t
case ld.RV_NONE:
return t
case ld.RV_390_DBL:
if (t & 1) != 0 {
ld.Diag("%s+%v is not 2-byte aligned", r.Sym.Name, r.Sym.Value)
}
return t >> 1
}
}
func addpltsym(ctxt *ld.Link, s *ld.LSym) {
if s.Plt >= 0 {
return
}
ld.Adddynsym(ctxt, s)
if ld.Iself {
plt := ld.Linklookup(ctxt, ".plt", 0)
got := ld.Linklookup(ctxt, ".got", 0)
rela := ld.Linklookup(ctxt, ".rela.plt", 0)
if plt.Size == 0 {
elfsetupplt()
}
// larl %r1,_GLOBAL_OFFSET_TABLE_+index
ld.Adduint8(ctxt, plt, 0xc0)
ld.Adduint8(ctxt, plt, 0x10)
ld.Addpcrelplus(ctxt, plt, got, got.Size+6) // need variant?
// add to got: pointer to current pos in plt
ld.Addaddrplus(ctxt, got, plt, plt.Size+8) // weird but correct
// lg %r1,0(%r1)
ld.Adduint8(ctxt, plt, 0xe3)
ld.Adduint8(ctxt, plt, 0x10)
ld.Adduint8(ctxt, plt, 0x10)
ld.Adduint8(ctxt, plt, 0x00)
ld.Adduint8(ctxt, plt, 0x00)
ld.Adduint8(ctxt, plt, 0x04)
// br %r1
ld.Adduint8(ctxt, plt, 0x07)
ld.Adduint8(ctxt, plt, 0xf1)
// basr %r1,%r0
ld.Adduint8(ctxt, plt, 0x0d)
ld.Adduint8(ctxt, plt, 0x10)
// lgf %r1,12(%r1)
ld.Adduint8(ctxt, plt, 0xe3)
ld.Adduint8(ctxt, plt, 0x10)
ld.Adduint8(ctxt, plt, 0x10)
ld.Adduint8(ctxt, plt, 0x0c)
ld.Adduint8(ctxt, plt, 0x00)
ld.Adduint8(ctxt, plt, 0x14)
// jg .plt
ld.Adduint8(ctxt, plt, 0xc0)
ld.Adduint8(ctxt, plt, 0xf4)
ld.Adduint32(ctxt, plt, uint32(-((plt.Size - 2) >> 1))) // roll-your-own relocation
//.plt index
ld.Adduint32(ctxt, plt, uint32(rela.Size)) // rela size before current entry
// rela
ld.Addaddrplus(ctxt, rela, got, got.Size-8)
ld.Adduint64(ctxt, rela, ld.ELF64_R_INFO(uint32(s.Dynid), ld.R_390_JMP_SLOT))
ld.Adduint64(ctxt, rela, 0)
s.Plt = int32(plt.Size - 32)
} else {
ld.Diag("addpltsym: unsupported binary format")
}
}
func addgotsym(s *ld.LSym) {
if s.Got >= 0 {
return
}
ld.Adddynsym(ld.Ctxt, s)
got := ld.Linklookup(ld.Ctxt, ".got", 0)
s.Got = int32(got.Size)
ld.Adduint64(ld.Ctxt, got, 0)
if ld.Iself {
rela := ld.Linklookup(ld.Ctxt, ".rela", 0)
ld.Addaddrplus(ld.Ctxt, rela, got, int64(s.Got))
ld.Adduint64(ld.Ctxt, rela, ld.ELF64_R_INFO(uint32(s.Dynid), ld.R_390_GLOB_DAT))
ld.Adduint64(ld.Ctxt, rela, 0)
} else {
ld.Diag("addgotsym: unsupported binary format")
}
}
func asmb() {
if ld.Debug['v'] != 0 {
fmt.Fprintf(&ld.Bso, "%5.2f asmb\n", obj.Cputime())
}
ld.Bso.Flush()
if ld.Iself {
ld.Asmbelfsetup()
}
sect := ld.Segtext.Sect
ld.Cseek(int64(sect.Vaddr - ld.Segtext.Vaddr + ld.Segtext.Fileoff))
ld.Codeblk(int64(sect.Vaddr), int64(sect.Length))
for sect = sect.Next; sect != nil; sect = sect.Next {
ld.Cseek(int64(sect.Vaddr - ld.Segtext.Vaddr + ld.Segtext.Fileoff))
ld.Datblk(int64(sect.Vaddr), int64(sect.Length))
}
if ld.Segrodata.Filelen > 0 {
if ld.Debug['v'] != 0 {
fmt.Fprintf(&ld.Bso, "%5.2f rodatblk\n", obj.Cputime())
}
ld.Bso.Flush()
ld.Cseek(int64(ld.Segrodata.Fileoff))
ld.Datblk(int64(ld.Segrodata.Vaddr), int64(ld.Segrodata.Filelen))
}
if ld.Debug['v'] != 0 {
fmt.Fprintf(&ld.Bso, "%5.2f datblk\n", obj.Cputime())
}
ld.Bso.Flush()
ld.Cseek(int64(ld.Segdata.Fileoff))
ld.Datblk(int64(ld.Segdata.Vaddr), int64(ld.Segdata.Filelen))
/* output symbol table */
ld.Symsize = 0
ld.Lcsize = 0
symo := uint32(0)
if ld.Debug['s'] == 0 {
if !ld.Iself {
ld.Diag("unsupported executable format")
}
if ld.Debug['v'] != 0 {
fmt.Fprintf(&ld.Bso, "%5.2f sym\n", obj.Cputime())
}
ld.Bso.Flush()
symo = uint32(ld.Segdata.Fileoff + ld.Segdata.Filelen)
symo = uint32(ld.Rnd(int64(symo), int64(ld.INITRND)))
ld.Cseek(int64(symo))
if ld.Debug['v'] != 0 {
fmt.Fprintf(&ld.Bso, "%5.2f elfsym\n", obj.Cputime())
}
ld.Asmelfsym()
ld.Cflush()
ld.Cwrite(ld.Elfstrdat)
if ld.Debug['v'] != 0 {
fmt.Fprintf(&ld.Bso, "%5.2f dwarf\n", obj.Cputime())
}
ld.Dwarfemitdebugsections()
if ld.Linkmode == ld.LinkExternal {
ld.Elfemitreloc()
}
}
ld.Ctxt.Cursym = nil
if ld.Debug['v'] != 0 {
fmt.Fprintf(&ld.Bso, "%5.2f header\n", obj.Cputime())
}
ld.Bso.Flush()
ld.Cseek(0)
switch ld.HEADTYPE {
default:
ld.Diag("unsupported operating system")
case obj.Hlinux:
ld.Asmbelf(int64(symo))
}
ld.Cflush()
if ld.Debug['c'] != 0 {
fmt.Printf("textsize=%d\n", ld.Segtext.Filelen)
fmt.Printf("datsize=%d\n", ld.Segdata.Filelen)
fmt.Printf("bsssize=%d\n", ld.Segdata.Length-ld.Segdata.Filelen)
fmt.Printf("symsize=%d\n", ld.Symsize)
fmt.Printf("lcsize=%d\n", ld.Lcsize)
fmt.Printf("total=%d\n", ld.Segtext.Filelen+ld.Segdata.Length+uint64(ld.Symsize)+uint64(ld.Lcsize))
}
}

79
src/cmd/link/internal/s390x/l.go Normal file
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@ -0,0 +1,79 @@
// Inferno utils/5l/asm.c
// http://code.google.com/p/inferno-os/source/browse/utils/5l/asm.c
//
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
// Portions Copyright © 1997-1999 Vita Nuova Limited
// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
// Portions Copyright © 2004,2006 Bruce Ellis
// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
// Portions Copyright © 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package s390x
// Writing object files.
// cmd/9l/l.h from Vita Nuova.
//
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
// Portions Copyright © 1997-1999 Vita Nuova Limited
// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
// Portions Copyright © 2004,2006 Bruce Ellis
// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
// Portions Copyright © 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
const (
thechar = 'z'
PtrSize = 8
IntSize = 8
RegSize = 8
MaxAlign = 32 // max data alignment
MinAlign = 2 // min data alignment
FuncAlign = 16
MINLC = 2
)
/* Used by ../internal/ld/dwarf.go */
const (
DWARFREGSP = 15
DWARFREGLR = 14
)

119
src/cmd/link/internal/s390x/obj.go Normal file
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// Inferno utils/5l/obj.c
// http://code.google.com/p/inferno-os/source/browse/utils/5l/obj.c
//
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
// Portions Copyright © 1997-1999 Vita Nuova Limited
// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
// Portions Copyright © 2004,2006 Bruce Ellis
// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
// Portions Copyright © 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package s390x
import (
"cmd/internal/obj"
"cmd/link/internal/ld"
"fmt"
)
// Reading object files.
func Main() {
linkarchinit()
ld.Ldmain()
}
func linkarchinit() {
ld.Thestring = obj.Getgoarch()
ld.Thelinkarch = &ld.Links390x
ld.Thearch.Thechar = thechar
ld.Thearch.Ptrsize = ld.Thelinkarch.Ptrsize
ld.Thearch.Intsize = ld.Thelinkarch.Ptrsize
ld.Thearch.Regsize = ld.Thelinkarch.Regsize
ld.Thearch.Funcalign = FuncAlign
ld.Thearch.Maxalign = MaxAlign
ld.Thearch.Minalign = MinAlign
ld.Thearch.Minlc = MINLC
ld.Thearch.Dwarfregsp = DWARFREGSP
ld.Thearch.Dwarfreglr = DWARFREGLR
ld.Thearch.Adddynrel = adddynrel
ld.Thearch.Archinit = archinit
ld.Thearch.Archreloc = archreloc
ld.Thearch.Archrelocvariant = archrelocvariant
ld.Thearch.Asmb = asmb // in asm.go
ld.Thearch.Elfreloc1 = elfreloc1
ld.Thearch.Elfsetupplt = elfsetupplt
ld.Thearch.Gentext = gentext
ld.Thearch.Machoreloc1 = machoreloc1
ld.Thearch.Lput = ld.Lputb
ld.Thearch.Wput = ld.Wputb
ld.Thearch.Vput = ld.Vputb
ld.Thearch.Append16 = ld.Append16b
ld.Thearch.Append32 = ld.Append32b
ld.Thearch.Append64 = ld.Append64b
ld.Thearch.Linuxdynld = "/lib64/ld64.so.1"
// not relevant for s390x
ld.Thearch.Freebsddynld = "XXX"
ld.Thearch.Openbsddynld = "XXX"
ld.Thearch.Netbsddynld = "XXX"
ld.Thearch.Dragonflydynld = "XXX"
ld.Thearch.Solarisdynld = "XXX"
}
func archinit() {
// getgoextlinkenabled is based on GO_EXTLINK_ENABLED when
// Go was built; see ../../make.bash.
if ld.Linkmode == ld.LinkAuto && obj.Getgoextlinkenabled() == "0" {
ld.Linkmode = ld.LinkInternal
}
if ld.Buildmode == ld.BuildmodeCArchive || ld.Buildmode == ld.BuildmodeCShared || ld.DynlinkingGo() {
ld.Linkmode = ld.LinkExternal
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hlinux: // s390x ELF
ld.Elfinit()
ld.HEADR = ld.ELFRESERVE
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x10000 + int64(ld.HEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 0x10000
}
}
if ld.INITDAT != 0 && ld.INITRND != 0 {
fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(ld.INITDAT), uint32(ld.INITRND))
}
}